diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9a10cae..5cd7111 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     outputs:
       triggered: ${{ steps.detect-trigger.outputs.trigger-found }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 2
       - uses: xarray-contrib/ci-trigger@v1
@@ -40,7 +40,7 @@ jobs:
 
     steps:
       - name: checkout the repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           # need to fetch all tags to get a correct version
           fetch-depth: 0 # fetch all branches and tags
@@ -72,7 +72,7 @@ jobs:
 
     steps:
       - name: checkout the repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: setup python
         uses: actions/setup-python@v5
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 9fc3b10..be0303b 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -23,7 +23,7 @@ jobs:
     outputs:
       triggered: ${{ steps.detect-trigger.outputs.trigger-found }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 2
       - uses: xarray-contrib/ci-trigger@v1
@@ -58,7 +58,7 @@ jobs:
 
     steps:
       - name: checkout the repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           # need to fetch all tags to get a correct version
           fetch-depth: 0 # fetch all branches and tags
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 81e95d2..d8ba52e 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -11,7 +11,7 @@ jobs:
     if: github.repository == 'keewis/blackdoc'
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Set up Python
         uses: actions/setup-python@v5
         with: